Encapsulating material, organic barrier cured product and quantum dot device

Abstract

The invention discloses an encapsulating material, an organic barrier cured product and a quantum dot device. When the encapsulating material is used for encapsulating the quantum dot device, the formed organic barrier cured product can have a good water-oxygen barrier function, so that the service life of the quantum dot device is prolonged. The encapsulating material is prepared from cyclic organosilicone modified epoxy resin, a curing agent and other auxiliaries. Multiple epoxy groups exist on each molecule of the cyclic organosilicone modified epoxy resin and are distributed symmetrically,and good hardness and barrier performance of the encapsulating material can be guaranteed; the cyclic organosilicone modified epoxy resin is low in curing shrinkage, and has better adhesive force onan electric device support when applied to an electric device; a main chain of the cyclic organosilicone modified epoxy resin is cyclic organosilicone, no unsaturated double bond exists on the main chain, and the resistance to yellowing of the cyclic organosilicone modified epoxy resin is good; the cyclic organosilicone modified epoxy resin is has better compatibility with epoxy monomers and can be cured by adopting multiple modes.

Description

technical field [0001] The invention relates to the technical field of quantum dots, in particular to an encapsulation material, an organic barrier cured product and a quantum dot device. Background technique [0002] At present, the particle size of quantum dots is generally between 1 and 10 nm. Since electrons and holes are quantum-confined, the continuous energy band structure becomes a discrete energy level structure with molecular characteristics, and can emit fluorescence after being excited. By controlling the shape, structure, and size of quantum dots, the electronic states such as the energy gap width, exciton binding energy, and exciton energy blue shift can be adjusted conveniently. Therefore, by controlling the size of quantum dots, any desired spectrum in the visible light region can be obtained, and the half-peak width can be controlled to obtain monochromatic light with pure color. [0003] At present, the technology of applying quantum dots to display backli...

AI Technical Summary

Problems solved by technology

If simple silicone water is used as the packaging material of QLED, the barrier performance is difficult to meet the requirements, and if simple epoxy resin is used as the packaging material of QLED, the anti-yellowing cannot meet the requirements

Traditional silicone-modified epoxy resins are mostly terminated with epoxy groups at both ends of the silicone main chain, and the epoxy equivalent is too small, resulting in poor hardness and barrier properties of the final glue.

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